[horde] php 5 compatibility

[hec spc]

hello,
I know horde cvs version has compatibility with php 5.
I want to upgrade my php installation to php 5 but I was wondering if 
the modules I have installed are also compatible with php 5.

The modules I have installed are:
imp
kronolith
nag
ingo
gollem
klutz
mnemo
passwd
thor
turba

Will I have some compatibility problems if I upgrade to php 5?

thanks a lot!

hec spc
web: http://www.xponja.net
personal web: http://www.goto20.com